My ds was like this. The most engaging smile, ready to laugh, normal eye contact, loved playing with me, his big sister and his nursery friends.
Speech came very slowly - sentences when they came were jumbled and he struggled for words . I had to be very patient to let him think and not jump in and speak for him - his sister even more so, as it’s so easy to anticipate the needs of a small child.
Fast forward… finally when he’s in year 2 and I decided he is bright, so maybe something else is going on. I was advised to get a hearing test just in case and to my complete surprise … He has permanent high-frequency hearing loss in both ears, but it’s very mild and borderline for hearing aids.
Apparently the early years hearing tests can’t always pick up this kind of hearing loss.
As a toddler the speech delays were variously blamed on “because of Covid lockdown” and “because he’s a boy” and “because he is advanced in other areas, speech will catch up later” so through all his early years educators and infants school he just learned to get on with it.
I always felt there was some problem with cognition - I thought he might have a processing delay. And in a way he does, because his brain has to work harder to interpret what’s going on around him, and sometimes he finds it frustrating.
His audiologist says that as parents we probably learned instinctively to keep our sentences simple and make sure he was looking at us when we spoke (yes, we did!). And we followed online advice not to constantly correct him but to repeat back what he says so he can hear it and see the shape our mouths make.
His school was honestly astounded when they found out he was hard of hearing. He has a mild speech impediment and problems with grammar but it hasn’t held him back - except his self esteem is a little bit low as he occasionally feels and says he is stupid.
He has lots of friends, he’s incredibly chatty and gregarious. We are on vacation at the moment and he charmed his way into the cockpit to sit on the pilot’s chair as we got on the plane and he got a high five from the guy in the passport control for no reason whatsoever.
In some ways I think he’s had to work harder to read facial expressions and it’s helped him socialise, just not speak.
So get a hearing test!